| 伍江波 金晓玲 汪晓丽 宁 阳 杜红岩.盐胁迫对杜仲幼苗生理特性的影响[J].广东农业科学,2015,42(2):17-21 |
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盐胁迫对杜仲幼苗生理特性的影响 |
| Effects of salt stress on physiological characteristics of Eucommia ulmoides seedlings |
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| DOI： |
| 中文关键词: 盐胁迫 杜仲 盐害指数 质膜透性 叶绿素含量 |
| 英文关键词: salt stress Eucommia ulmoides salt injury index plasma membrane permeability chlorophyll
content |
| 基金项目: |
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| 摘要点击次数: 1549 |
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| 中文摘要: |
| 通过研究杜仲幼苗对盐胁迫的生理响应，探讨杜仲耐盐机理，以选育出较耐盐的杜仲品。 结果表明，叶片盐害在胁迫浓度和持续时间上，响应的速率和受害症状持续增大；质膜透性、叶绿素含量、SOD 活性、脯氨酸含量均随 NaCl 浓度的增加和处理时间的延长表现出逐渐增加的趋势，低盐度胁迫下增加趋势不明显，中、高盐度胁迫下迅速上升，上升到一定程度后开始下降；不同杜仲品种的抗盐性存在明显的差异，其中JC159 和 JC009 具有较高的抗盐性，JC119 和 JC144 的抗盐性相对较弱。 |
| 英文摘要: |
| This paker was aimed to study the physiological response of Eucommia ulmoides seedlings to salt
stress, explore the mechanism of salt tolerance of E. ulmoides, breed salt-tolerant varieties of E. ulmoides. The
results showed that the rate of response and suffer symptoms of the salt damage of leaves continued to increase with
the stress concentration and duration. Plasma membrane permeability, chlorophyll content, SOD activity and proline
content gradually increased along with the increase of NaCl concentration and the prolongation of treatment time.
Increasing trend was not obvious under low salinity stress, was rapid under middle and high salinity stress, and it
began to decline when the salinity stress was up to a certain extent. The salt resistance of different varieties of E.
ulmoides existed obvious differences, JC159 and JC009 had high salt resistance, the salt resistance of JC119 and
JC144 was relatively weak. |
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